噪声背景下目标线谱提取方法研究

Extraction of target spectral lines in background noise

利用目标线谱与自噪声线谱在时间域和空间域上的差异,采用时空联合手段研究舰船噪声中目标线谱的提取方法。文中具体讨论了连续谱背景下线谱的提取方法以及舷侧阵中自噪声线谱与目标线谱的分离方法。海上实验数据处理结果表明了该方法的有效性。

This paper deals with extraction of spectral lines of underwater targets in background noise u-sing a space-time integral method. Based on the difference between the target spectral lines and spectral lines of self-noise, extraction of spectral lines from background noise and separation of the target spectral lines from spectral lines of self-noise are discussed. Results of experiments on data obtained from the sea indicate validity of the method.